diff options
Diffstat (limited to 'lib/sqlalchemy/sql/functions.py')
| -rw-r--r-- | lib/sqlalchemy/sql/functions.py | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/lib/sqlalchemy/sql/functions.py b/lib/sqlalchemy/sql/functions.py index a2b7ac628..244505bed 100644 --- a/lib/sqlalchemy/sql/functions.py +++ b/lib/sqlalchemy/sql/functions.py @@ -31,17 +31,18 @@ def register_function(identifier, fn, package="_default"): class _GenericMeta(VisitableType): def __init__(cls, clsname, bases, clsdict): - cls.name = name = clsdict.get('name', clsname) - cls.identifier = identifier = clsdict.get('identifier', name) - package = clsdict.pop('package', '_default') - # legacy - if '__return_type__' in clsdict: - cls.type = clsdict['__return_type__'] - register_function(identifier, cls, package) + if clsname != 'MetaBase': + cls.name = name = clsdict.get('name', clsname) + cls.identifier = identifier = clsdict.get('identifier', name) + package = clsdict.pop('package', '_default') + # legacy + if '__return_type__' in clsdict: + cls.type = clsdict['__return_type__'] + register_function(identifier, cls, package) super(_GenericMeta, cls).__init__(clsname, bases, clsdict) -class GenericFunction(Function, metaclass=_GenericMeta): +class GenericFunction(util.with_metaclass(_GenericMeta, Function)): """Define a 'generic' function. A generic function is a pre-established :class:`.Function` |